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Finding the Fourth Proportional to 10,672.10, 16,008.15 and 7,172.90

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Solution

The fourth proportional to 10,672.10, 16,008.15 and 7,172.90 is: 10,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,672.10 : 16,008.15 = 7,172.90 : x
  2. Step 2: Convert to fraction form
    10,672.10/16,008.15 = 7,172.90/x
  3. Step 3: Cross multiply
    10,672.10x = 16,008.15 × 7,172.90
  4. Step 4: Simplify right side
    10,672.10x = 114,824,859.14
  5. Step 5: Solve for x
    x = 114,824,859.14/10,672.10
  6. Step 6: Final answer
    x = 10,759.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.